DEFECTS FORMATION AND TRANSFORMATION IN GERMANOSILICATE OPTICAL FIBERS BY UV LASER IRRADIATION

Youcef Ouerdane (1) , Aziz Boukenter (1) , Kader Medjahdi (1) , Fabrizio Messina (2) , Marco Cannas (2)

1 LHC - Laboratoire Hubert Curien
2 DIPARTIMENTO DI SCIENZE FISICHE ED ASTRONOMICHE - Dipartimento di Scienze Fisiche ed Astronomiche

We investigated the laser-energy-density dependence of absorption changes and paramagnetic centers induced by UV laser irradiation at 5.1 eV, un both virgin and hydrogen loaded germanosilicate optical fibers. The germanium lone pair centers (GLPC) are used as an in situ probe source to determine the induced absorption in the blue and near ultraviolet spectral range around 3.1 eV. The influence of hydrogen loading on the photoluminescence processes are also studied using the temperature dependencies of steady-state photoluminescence from the triplet state ascribed to this same emitting center.

Domains: Instrumentation and Detectors [physics.ins-det]; Materials Science [cond-mat.mtrl-sci]

Youcef Ouerdane, Aziz Boukenter, Kader Medjahdi, Fabrizio Messina, Marco Cannas. DEFECTS FORMATION AND TRANSFORMATION IN GERMANOSILICATE OPTICAL FIBERS BY UV LASER IRRADIATION. Hanoï. ⟨ujm-00117498⟩